Internal-combustion engine.



G, A. SPEASL.

INTERNAL COMBUSTION ENGINE,

APPLICATiON EILED FEB 8. ma.

Patentd (jot. 22,1918;

5 'nveni-an 30 tion.

UNITED STATES PATENT OFFICE.

GEORGE A. SPEASL, or unw'ron, ILLInoIs', ASSIGNOB or THREE-TENTHS T enonqn KmsE I, ONE-TENTH 1'0 H. w. annrrzuan, ONE-TENTH T0 w. H. PIPPIN,: on TWENTIETH 'roc. J. .musonovn 'nnn ONE-TWENTIETH T0 A. J; KINSEL. ALIJLFI NEWTON, ILLINOIS. p

- INTERNAL-COMBUSTION ENGINE.

1,232,432, Specification dimers ra Patented Oct 2 2. Application filed Felirueryfilo m. Seria1 1i'-o.216,d26. p -i To all whom/it may concern: fashion in pairs eaclipair having one llllli'u Be it known that I, G'nonon A; Srmsn, superposed npo'n the other. Thus, in l igrtwf a citizen of the United States, residin at 2, one tip-it," consisting of the opposed calf.

Newton, in the county of Jasper and I tate indersi'l and 2, i n n t vP 11ali hi'r t 5 of Illinois, have invented certain new and A unit consisting of opposed cylindersfi-and 54, useful Improvements in InternalComhus- ,-u'nd, as suggested in Fig. 1 other pairsoff tion Engines, of which the following is v -similar units may be added and connected 6ospecification. a up withthe same driving means. the upper]; Thi i v ti l t t i t l ggifibuscylinders of the added pair of units being tion engines of the opposing cylinder type, designated 5 and 6 in. this figure. The cyl-i. and has for its special object t improve the inders of each unit are connected by a tn ni driving connections between theseveral pislar member Twhichserres'as a guide for the 65 tons of various multiples of th two opposed double piston 8 and which has an axially ex? cylinder units. tending slot 9 for the working: of the htnt In engines of this kind, heretofore conend. portion 10 of the piston win or arm 11 strncted,. there has. been" an objectionable carried by a longitudinal guide rodxrr lide tendency-toexcessivejtiction ,betwee1i the 12 working inways formed iir. -conncctiilg.-70 pistons andthe sides q-t the cylinders on acstraps or ears 13 of the eylindcr ca ting";

count of the lateral thrust hf the crank to The crank shaft ll passcs hetwccn, 10

hi h th i ton royis ere'onnectedg and it, upper and lowerunits oi caclrpaii:and is is th ai of this in ntion to overcome this arranged transverselymidway ot' the ;c linside draft or thr stynf the istons thereby t e un g m r 7- Thc nuideaiml or is: decreasin fricthflhand side slap and insurslide 12 is preferably formed with i 1.11 5 1 'ing long wear and "more power. to 'work around the crank shat'ti any 2s The in'ventioiwtill'be firsthereinafterdepist n pin 1' a m 1 dheimp l;v scribed in com l'ction with the accompany connected to the nppcr poitiouof said;

ing'drawings, hich constitute part of this whilethe corresponding 'arm' 10- for spe ffication, and then more specifically delower unit is connected to thculowcr' 1 v fined in theclaims at the end of the descripof said loop as illustrated in Fig.3.; T1311; hcnt end portion 10 of-the arm llcxtends I th accompanying d i h i upwardly for connection with the double similar reference characters are used t (l piston 8 of the upper unit. while the corignate corresponding parts throughout the rcs 'ionding hcut end portion 17 of the arm several view's-- it) extendsdownwardly for connection with 35 Figure 1 is a broken plan view an enthe donhlc piston 8 of the lower unit. It.

gine composed of four of the op )osed-cylinwill thus b03981] that thc donhle pistons in der units, two above and two he ow in ta'noth units "move together in the s un dein fashion, the upper cylinders being rercctron.

moved, howeyer, in this figure to more The impulses of the pistons. which are 40 clearly illustrate the driving comieotions. transmitted directly to the gu de rod 1;

Fig. 2 is a side elevation of two superthrough the piston pins or arms 11 and 16,

posed opposed-cylinder units with the drivare conununicatcd to the crank shaft 1 th) ing connections therefor. a conncctmgrod or puman 1S swirclcd at Fig. 3 is a longitudinal section on the line one end to the crank 10 on said shaft and' .45 3-3of Fig. 1, including! the nprwrpair of at the otlmficnd ton pin 20 on said guide cylinders; and rod. llach oflthc four cylinders l,;- 3 and Fig. 4is a cross section onthe line l-l of 'i' of each tandem pair ol' units is adaplcd Fi .1 to iirc in turn. exhaust iu lump charge in The engineispreferably-cmuposcd of two. turn and compress in turn. and this cycle 50 fouror some other multiple of two t'llillfifit'll ot' opcratioiis takes place in rotation in the cylinder llllll'S, four of such nmtsheiug il'lu.-'- H'Vcrnl ovlindcrs. Thus. when cylinder 1 trat-cd in the drawings hr \\n of illlhll'uis lircd and its piston is making the power tion. Said units arc arranged lululvui stroke. the charge is being compressed pair,

duced to a minimum.

cylinder 2, the charge is being taken into cylinder 3 and cylinder 4, is being exhausted. It will be understood that the engine is of the four cycletype an'dthat any suitable valve system may be used With it.

lVhen another pair of units is used, as suggested in Fig. 1, the crank shaft 27 thereof is arranged in line with the crank shaft 14, and the crank 28 n the shaft 2-7 ls connected to the pitman 18 in line with its connection to the crank 19, so that the cycle of operations in the cylinders of the second.

pair of units will be thesame as in the first The crank shaft need have only two main bearings and oneconnecting rod iearing, requiring a very small and lightfly wheel, so that the device is easy and inexpensive to construct; The pistons are made extra long while the strol'i-e thereofis short, thus in su'ring long wear and great power. The long guide rod or slide 12 also reduces friction and increases the power of the engine,

of this t ype, and less expense is required for its upkeep and lubrication; At the same time this improved engine will develop the n'iaximum horse power and is of superior flexibility.

lVhile the invention is herein shown and described as used in an internal combustion engine it will be readily understood that such use is'not limited to engines of that character but that the invention is equally applicable to steam, compressed air or similar type'of engine.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is-

1. In an engine, the combination with two pairs of opposed' cylinders arranged in paralleh ofdouble pistons eachhaving its opposite end portions arranged in the cylinders of one pair, a slide guided to move axially of said cylinders and having a loop, arms carried by the opposite portions of said loop and connected respectively to the inter mediate portions of the double pistons, a crank shaft extending through said loop. and driving connection between said slide and crank shaft.

2. In an engine, the combination with two pairs of opposed cylinders'arranged in parallel, of double pistons each having its opposite end portions arranged in the cylinders of one pair, a slide guided tO'lllOYQ axially of said cylinders and having a loop, arms on said slide connected respectively to the intermediate portions of the double pistons, a. crank shaftextending through said loop, and driving connection between said slide and crank shaft.

GEORGE A. SPEASL. 

